Math discussion # 2

I need help on this class. Class is Math/221. I am offering $100 a week for this class. Also need help on math discussion this week. I had one person from this site start the week 1, but he could not complete. Anyone willing to help, please email me and let me know.

On this discussion, please answer what is asked. Only do handshake if you are able to answer the question. I already had one person not even give me the answer yet and it was due yesterday.

HERE IS THE DISCUSSION

Find the probability of three randomly selected persons who have same birthday. Ignore Leap years.